| 摘要 |
The invention relates to a deep hole drill consisting of three sections, a drill head, a shank and a clamping element. The drill head and the shank are provided with at least one preferably straight-grooved machined groove. In order to be able to carry out drilling in a more economic manner with improved feed values, the shank is made of a hard metal. The drill head can be made of a hard metal which is different from the hard metal of the shank. |
